Spotted Whistling-duck vs Velvet Scoter
Dendrocygna guttata 비교 대상 Melanitta fusca
Side-by-Side Comparison
| 속성 | Spotted Whistling-duck | Velvet Scoter |
|---|---|---|
| 학명 | Dendrocygna guttata | Melanitta fusca |
| 목 | Anseriformes | Anseriformes |
| 과 | Anatidae | Anatidae |
| 보전 상태 | Least Concern | Vulnerable |
| 체장 | — | — |
| 날개 폭 | 41.3 cm (16.3 in) | 51.8 cm (20.4 in) |
| 체중 | 677.5 g (23.90 oz) | 1635.1666666666667 g (57.68 oz) |
| 식성 | Primarily herbivorous; grazes tundra grasses and sedges; winters on coastal marshes and farmland, switching to … | Dives for mussels, cockles, and crustaceans in coastal and brackish waters. Freshwater insects taken on … |
| 산란 수 | 10-11 | 7-9 |
| Population Trend | — | — |
Habitat Comparison
Spotted Whistling-duck
Freshwater wetlands, rice fields, streams, and forest pools in New Guinea, Sulawesi, the Philippines, and Moluccas. Often found near forested rivers and seasonal swamps at low elevations.
Song & Call Comparison
Spotted Whistling-duck
A musical, high whistle similar to other whistling-ducks. Call is softer and less far-carrying than White-faced or Black-bellied species. Given in flight and on water.
Velvet Scoter
Male emits a low, melodious whistled note; female produces a guttural, rasping call. The male's soft whistle contrasts with the female's harsh, buzzy alarm call on European coasts.
Geographic Range & Migration
Spotted Whistling-duck
Ranges widely across sub-Saharan Africa in open woodland and savanna. Largely sedentary with local seasonal movements to water.
Velvet Scoter
Breeds in boreal forests of northern Europe and western Siberia. Winters on coasts of northwestern Europe, the Black Sea, and Caspian Sea.
보전 상태
Spotted Whistling-duck
Velvet Scoter
How to Tell Them Apart
Spotted Whistling-duck
Dark brown above; head and neck dark brown. Underparts heavily spotted white on dark brown ground, giving spotted appearance. Flanks with bold white spots. Pink-red bill and legs. Sexes similar.
Velvet Scoter
Male is jet black overall with a small white teardrop below eye and white speculum visible in flight; yellow-sided bill with black knob at base. Female is dark brown with …
About These Birds
Spotted Whistling-duck
옆구리에 굵은 흰 반점, 주황-붉은 부리와 다리, 엷은 얼굴을 가진 소형 어두운 갈색 홍따오기. 뉴기니·필리핀·인도네시아의 열대 습지에 서식. 종종 담수 개울과 침수 초원 근처에서 발견. 다른 홍따오기보다 덜 사회적.
Velvet Scoter
대형 해오리로 체장 51–58cm이며, 수컷은 전신이 검은색에 흰 눈 반점, 흰 날개 반점, 오렌지색 부리를 갖는다. 유라시아 북부의 호수와 습지에서 번식하고 유럽과 아시아 해안에서 월동한다. 잠수하여 연체동물과 갑각류를 먹는다. 취약한 상태이다.